NEET2012BotanyPhotosynthesis in Higher PlantsActual
Photorespiration shows formation of
Options
- Asugar but not ATP
- BATP but not sugar
- Cboth ATP and sugar
- Dneither ATP nor sugar.
Correct answer
D. neither ATP nor sugar.
Step-by-step solution
Photorespiration is the light dependent process of oxygenation of ribulose biphosphate (RuBP) and release of carbon dioxide by the photosynthetic organs of a plant. Normally photosynthetic organs do the reverse in the light, i.e., uptake of CO ₂ and release of O ₂ . At high temperature, RuBP carboxylase functions as oxygenase and instead of fixing carbon dioxide ( C ₃ cycle), oxidises ribulose 1,5 -biphosphate to produce a 3-carbon phosphoglyceric acid and a 2-carbon phosphoglycolate. Photorespiration does not prod